The incidence of urethritis in women is higher than that of men, which is related to the characteristics of the female urethra, but also to bacterial infection, low body resistance, and underlying diseases of the urinary system. 1, the distance between the female urethral opening and the anus is closer, and the female urethra is short, wide and straight, about 2cm long, so the resistance to bacteria is lower, and it is easy to be retrograde infected by bacteria around the anus. Reflux into the bladder can lead to acute urinary tract infections. 2, there are other manifestations of bacterial infection in the body, through the bloodstream dissemination, spread to the urethra to cause urethritis. At this time if the body’s immune function is poor, the lack of resistance to pathogens can induce urethritis. In addition, if there is urological tuberculosis, urinary stones and other diseases, obstruction of the urethra, causing bacteria to colonize the urethra, will aggravate the inflammation. 3, personal hygiene is not paid attention to, usually do not pay attention to the care of the pubic area, so that the perineal area and around the anus grow a lot of bacteria, especially E. coli, it is easy to enter the urethra through the urethral opening leads to inflammation. So urethritis is mainly caused by bacterial infection, and it is easy to develop when the body’s resistance is insufficient. Normally, you should pay attention to personal hygiene, exercise more and strengthen the resistance.